Card



May 13, 1930. R. G. CAMPBELL CARD Filed Sept. 4, 1926 Patented May 13,1930 ynoiaiain'r G. CAMPBELL, oF NEWYORK MILLS, NEwYonx CARD Applicationfiled September 4,1926,` Serial 110.133,711.

y which shally effectively take the so-called lap from the lap-roll andstart the cotton, or

other material, on its course through the card,

but shall do so with less injury to the material than the feedingapparatus now generally used.

The above and other objects of the invention are accomplished by themethod and apparatus described in the following specification andillustrated in the accompanying drawings forming a part of thisdisclosure.

In these drawings Fig. 1 is a semi-diagrammatic illustration showing, intransverse section, the arrangement and construction of the introductoryfeeding mechanism of one form of my invention; and Fig. 2 is a similarillustration showing another form of the invention, being a practicalmodication. a

In the usual card employed in the cotton industry, a lap is drawn fromthe roll, mounted at the front end of the card, and-is directed across ahorizontal feed-plate. At the inner end of this feed-plate, the lappasses under a fluted gripper and feeding roll. The lap is then directedupwardly over a lip, beyond the upper edge of which it is presented to alickerin. The lickerin and feed-roll revolve so that their peripheriesmove in opposite directions relatively and the peripheral speed of theliclrerin is greater than that of the feed-roll. Thus, the teeth of thelickerin continuously pull batches of liber f rom the lap extendingoverthe feed-plate-llp. The fibers picked up by the liclgerin are latertransferred to a large carding roll.

In cotton spinning, the primary function of the carding operation is thedrawing of the cotton-ber mass; the secondary function is thepreliminary paralleling of the fibers.

In order that the lickerin may act to initiate the paralleling of thefiber and, likewise, that it may draw from the lap relatively minutequantities of thefiber, it is necessary that the fibers be firmlygripped at their outer ends. Many fibers inthe cotton mass areveryshort; and, in order to afford a grip on these,Y it is necessarythat the gripping pointbeilocated as closely as possible tothe lickerin.Hence, it is the practice, in constructing cards for use in cottonspinning, to operate the feed-roll in association with the sharp-edged,abrupt-faced lip.

The use of this type of lip, while advan@ tageous in treating cotton, isobjectionable when short-length rayon-fibers are treated.

`Cotton-fibers are relatively strong and can withstand considerableabuse; but rayon filaments are relatively tender. Hence, while cottonVendures the severereverse bending when pulled over the edge of the lip,rayonfilaments tend to break and score when drawn over the lip; theresult being a loss ofL strength and luster in the ultimate yarn.

Hence, the present invention seeks to provide means whereby the usualcotton-card may be adapted to the treatment of rayon.

In both forms or embodiments ofmy in- STATES/PATENT `oFFicli vention,the abrupt, sharp-edged lip, is elimit' nate'd. Theresultfs are two innumber: First, the gripping action of the feed-roll and plate islessened, and the fibers may, therefore, be

more easily withdrawn from the lap by the lickerin; and, secondly, thesevere bending? of the fibers over the sharp edge of the lip l iseliminated and the fibers are drawn off in a gentle arc.

In the formof the invention shown in'F ig. 1, the feed-plate 12a isaccompanied by the feed and gripping roll 13 (as in the ordinary card)and the innerend of the plate is chamfered to correspond with thecurvature of the lickerin, the upper edge or surface being slightlyrounded, as indicated at 17.

In the formr of the invention shown in 2, the gripping and feed roll 18cooperates, Y

no-t with the feed-plate 19, but with a'fioating pressure-bar 20, theroll 18 being mounted underneathin fixed bearings (not shown), and thebar uppermost and in a manner permitting it to freely andconstantlyadjust itself in a vertical direction.- 'Ihe vertical movementof the bar may be afforded through spring or Weight (not shown) arrangedto press the bar toward the roll, or through the mere action of gravityv What I claim is: v Apparatus for treating rayon, including afeed-plate over Which theV hrous mass travelsnlfa:Singlelhorizo'ntalplane, a feed- `roll juxtaposed tof'one edge of'thefplate for Vdrawing the yarn thereover, and a---lickerin, l@ the axisof the.y lokerinbeng located in: va

plane substantiallyabofe'that of the'feedplate, also .juxtaposed to theedge of them plate and eoacting With the feed-roll, Whereby the fibrousmass passes betweenstheredge of the plate and the peripherynof thelickerin p `Without Lsulostantial elevation-above *its'plane fof-ftravel ovrtheplate; arid Whieh by'reason "ofthe Ipoe'tionofthef'feedplate substantially below the -aXis Vcffthe lickern is picked -up20121351 thel lower periphery ofi bhe lekerin :Withouteuhjeetingbheifbers 1 tof' any substantial 'bending `against the edgeoff the feed-plate.

InltestiinonyfwhereofiI aixrny Signature.

' RG'BE'RT G# CMPBEEL.

